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» Gallery » Logical puzzlesTrojrovnice I - difficulty 2.2 (former difficulty 3)
Doplňte místo otazníků vhodně znaménka +, -, ×, / a závorky, aby platily následující rovnosti:
17 ? 21 ? 3 = 20 ? 34 ? 16 = 30 ? 39 ? 27 (17 × 21) + 3 = 20 × (34 - 16) = 30 × (39 - 27) = 360 |
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